Grate



W. E. RIDER.

GRATE.

APPLICATION FILED Nov. 22-1909.

l ,l 93,822. Patented Aug. 8, 1916.

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GRATE.

APPLICATION FILED Nov.-22,1909

l l 93,822 Patented Aug. 8, 1916.

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WILLIAM E. RIDER, 0F MANSFIELD, MASSACHUSETTS.

GRATE.

Speoiiication of Letters Patent.

Patented Aug. 8, 1916.

Application filed November 22, 1909. Serial No. 529,239.

To all whom t may concern.'

Be it known that I, WILLIAM E. RIDER, of Mansfield, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Grates, of which the following is a specication.

My'invention relates primarilyto shaking grates and my main object is to increase the eiiiciency of the grate both by saving coal and by increasing the combustion of coal actually used.

Another object is to improve the construction in such manner that the grate will be stronger and will require less repairs than heretofore.

My invention accomplishes these objects and consists primarily in providing two fuel-supporting sections of the grate, which can move independently of the other so that when theuser desires to shake the movable section the fuel on the other section will be undisturbed.

A feature of my invention in its preferred form is a single header acting to guide the two sections which in the preferred form are both movable independently of each other.

Other features will be pointed out below.

In the drawings Figure 1 is a plan, partly broken away, of a grate embodying my invention; Fig. 2 is an elevation of the same; Fig. 3 is a section on line 3-3 of Fig. 1; Fig. 4 is a partial vertical section on line of Fig. 1 but showing also the ash-pit d oor- Fig. 5 is a detail of the ball bearing; and Fig. 6 is a detail of the operating mechanism; and Fig. 7 is a sectional detail of one end of one of the cross-pieces.

Hangers A A are supported in any suitable way as, for example, by brackets such as a in Fig. 4. The hangers are slotted to .receive headers B B, cross pieces D D D2 D3, rocker arms E E and the central header F.

The headers B B struction.

The cross pieces D D the side walls d sloping upwardly and outwardly. toms d d of the slots are narrower rest of the cross piece. Projections d2 are of well-known con- D2 D3 are slotted at d of the slots l'Ihe botthan the d2 eX- one of tend from each side of the cross pieces at the slotted portions so that the tops of the projections and the bottom of the slot form a continuous track for the ball cl3. At the end ofeach projection is a stop di. It will be noticed that by making the width of the track considerably less than the space between the side walls of the slot in the cross piece and by making the bottom of the slot of smaller dimension than thethickness of the cross piece I provide a track which is efficient to receive the ball and which is also easily kept clear of ashes and the like, the latter being true because of the clear spaces on both sides of the track, as the only limitation on the amount of such space is that thefball may not fall from the track.

The side walls CZ d of the slots in the cross pieces act not only as guides and retainers of the ball but as guides for the reciprocating grate bars as will be described below and this double guiding function is an important feature of my invention.

At one side of header F, which is preferably held rigidly inits slot in the hanger, is fuel-supporting section Gr and at the other side is fuel-supporting section Gr. Each section comprises a plurality of grate bars I-I mounted side by side, adjacent grate bars being adapted to move in opposite directions by means of rockers E E. Each grate bar has the usual teeth and a substantially vertical web l1., which is guided by the side walls of the slots in the cross pieces, the grate bars of section G being guided in the slots in cross pieces D D and the bars of section G being guided in the slots in cross pieces D2 pendently movable as will now be explained.

At the rear of the ash pit doorway depend brackets K K. To bracket K is pivoted arm lo having a rectangular slot 7c. Link 705 is pivoted to arm 7c and to rock arm E so that when shaker rod L is inserted in slot c and moved up and down the arm ,7s and consequently rocker E will be moved to reciprocate the bars of section G. Y

Pivoted to bracket K is arm ,7c3 slotted at 704. vLink k2 is pivoted to arm ks and to rocker E and by the use of a shaker rod in- D3, the two sections being inde- I vplied to the desired arm 7c or 7c3 may be used and both sections shaken at theV same time.. If, however, it is desired to accumulate the fuel on the front section of the grate, this may be done and then the rear section shaken until it is thoroughly cleaned of clinkers and ashes. The fuel may be then pushed back on the rear section and the front section shaken by means of its shaking mechanism. Or it may be desired to sh'ake one section of the grate leaving the other section undisturbed and this may be readily accomplished by using the appropriate moving mechanism as it will be clear that each section may be moved independently of the other section. Each grate bar reciprocates in the vertical planev of its web and is partially guided by the walls of the slot in ythe cross piece, eachsection moving as a whole horizontally, and adjacent grate bars of each section being moved in opposite directions by the oscillation of the rocker for that section. While the grate'bars are being reciprocated the rollers will reciprocate in their bearings and by reason of the spaces between the cross pieces and the stops will remove by their reciprocation whatever ashes may accumulate in the bearings. The remainder of the operation will be clear from the description. A

In the use of gratesit is clear that one of the most important considerations is the saving of coal and this I accomplish in several ways one of which is that if one section becomes clogged, I may shake that j section without shaking the other so that no coal drops from the section which is not clogged. M grate also saves coal because the latter may be collected on one section while the ashes and clinkers are being shaken from the other, so that the good coal is not shaken l through the grate and wasted. Moreover,

the section from which the good fuel has been removed may be more .thoroughly shaken and cleaned out than heretofore with the result thatlwhen the good fuel has been replaced there will be thorough and complete combustion.

An important advantage of my grate is that the bars will support more fuel because they are better supported than heretofore and therefore stronger and moreover the likelihood of warping of the grate bars is very much decreased with the result that the bars not only retain their strength but prevent the coal falling between them with consequent waste. Itrwill also beclear that the :cost .of repairs. is very .muchy lesslwith my grate for the reason that if a portion of any grate bar becomes defectiveit is only necessary to replacethat one which extends only half the length of the grate whereas heretofore a defect required replacement by a bar which was of the full length of the grate.

Y Another advantage is that a short bar may supported in the slots in the hangers to. guide 'Y the movable section; and means to'move the movable section.

2. In a grate t-he combination of two fuel-V supporting sections, one movable independently of the other; bearings for said sec- Y i tions; hangers to support the bearings and being slotted between the bearings; a substantially fixed header located between the two sections and supported in said slots of the hangers t and means to move the movable section.

3. In a grate the combination of twoy fuelsupporting sections, each movable independently of the other; bearings for said seco guide the'movable section, i

tions; hangers to support the bearings and Vbeing slotted between vthe bearings; a sub.-

stantially xed header located betweenvthe two sections and supported in said slots ofv the hangers toguide the vmovable sections;

and means to move the sections independently of each other.

4f.k In a grate the combination of slotted hangers, two sections supported by the hangers, pendently of the other; a substantially fixed header located between the two sections and supported in the slots in the hangers to guide the movable section so as to prevent one section being movable inde-V lateral movement thereof; and v means to y;

move the movable section.

5. In a supporting sections, onemovable independently of the other; bearings for said sections; hangers to lsupport the bearings and stantially fixed header located between the Y two sections, supported in said slots of the hangers and guiding the movable section` so as to prevent lateral movement ther means to move the movable section.

grate the combination of two fuel'- 'being slotted between the bearings; a subi eof; and I *p 6. In a grate the combination of two uelhangers and guiding the movable section so supporting sections, each movable independas to prevent lateral movement thereof; and ently of the other; bearings for said secmeans to move the movable section.

tions; hangers to support the bearings and WILLIAM E. RIDER. 5 being slotted between the bearings; a sub- Witnesses:

stantially fixed header located between the M. G. HENNESSY,

two sections, supported in said slots of the G. A. ROCKWELL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

